Focal Length & Maximum Aperture: 24-70mm 1:2.8

Lens Construction: 16 elements in 13 groups

Diagonal Angle of View: 84° – 34°

Focus Adjustment: Front-focusing method

Closest Focusing Distance: 0.38m/1.25 ft.

Zoom System: Rotating Type

Filter Size: 77mm

Max. Diameter x Length, Weight: 3.3″ x 4.9″, 2.1 lbs. / 83.2mm x 123.5mm, 950g